You can select the tag's **Key** and **Value** from the suggestions, or you can enter your own.

{{<image filename="images/rc/tags-new-tag.png" alt="The New tag fields." >}}

A valid tag must follow these guidelines:
- Tag keys must be between 1 and 64 characters long, and values must be at least 1 character long.
- Tags can only have lowercase letters, numbers, spaces, and these special characters: `-`, `_`, `.`, `+`, `@`, and `:`.

After you add your first tag, you can:

- Select the **Key** or **Value** field of an existing tag and enter new text to edit it.

- Select **Delete** next to a tag to delete it.

    {{<image filename="images/rc/icon-delete-lb.png" width="36px" alt="Delete button." >}}

- Select **Add additional tag** to add another tag.

    {{<image filename="images/rc/tags-button-add-additional-tag.png" alt="The Add additional tag button." width="200px" >}}